A bandwidth-aware SDN application for openflow enabled networks

• Autor(a) principal: Costa, Filipe Cabral Amaral Nunes da
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/29559
• topic: SDN; OpenFlow; Software Defined Networking; SDN controller; Ryu

Software Defined Networking (SDN) is a recent networking technology that improves existing technologies by separating the control plane from the data plane. It changes the network so that it is more dynamic, less complex and easier to interact with and to automate which, in turn, can lead to the development of more efficient and effective software. Despite being a fairly recent technology, it is compatible with existing switches and other network devices that support the OpenFlow protocol. In this dissertation, the Ryu controller is used (an SDN controller developed in Python) that together with the OpenFlow protocol manage the data plane. In this work, a network control mechanism was implemented in the form of an application for the Ryu controller to control the traffic of multiple sensors, the main example being a network within a vehicle. The implemented mechanism for resource management aimed at guaranteeing the latency results of the packets traveling across the network, taking into account the variable number of clients sending traffic on the network. According to the results obtained, the time it takes for a packet to go from its source to its destination and back to the source varies between 15 ms and 35 ms when the packets have to be handled by the controller and varies between 0,5 ms and 1,8 ms, when they do not go through this process.